This study elaborated on the explanation of theosophical Sufism in the book of al-Hikam by two well-known Islamic academics, Kyai Sholeh Darat (Indonesia) and Shaykh ‘Abdullah Gangohi (India). The data in this study are the text of Syarah al-Hikam, written by Kyai Sholeh Darat and the text of Syarah Al-Hikam in the perspective of Shaykh ‘Abdullah Gangohi. This qualitative research study used a Systemic Functional Linguistic (SFL) approach from M.A.K. Halliday. Data analysis in this research applied the Spradley model, namely: (1) domain analysis, (2) taxonomy analysis, (3) componential analysis and (4) analysis of cultural themes. The domain analysis tried to map the information structure in the explanation of al-Hikam based on the theory of SFL. This information structure is the basis for the genre analysis as a semiotic representation of social society. Meanwhile, the taxonomic analysis tried to elaborate on the Sufism thoughts of both the thinkers based on the Syarah al-Hikam text. Componential analysis synergised the results of the information structure and the theosophical Sufism thought in al-Hikam. Finally, the analysis of cultural themes endeavoured to elaborate on the theosophical Sufism thoughts of the two Sufism thinkers and to draw the relationships and the contributions to the universal Sufism. The conditions of theosophical Sufism can be elaborated based on the information structure. The limitation of this study is the lack of researcher’s efforts to investigate the substance of theosophical Sufism, because this research is only limited to the outer layer of language.Contribution: This article shows that the thought of theosophical Sufism showed that Islam in Southeast Asia is Islam that carries the spirit of Islam Rahmatan lil-alamin. In addition, the thought of theosophical Sufism in Syarah al-Hikam has had an impact on the socio-cultural transformation, especially on the Sufism movement [thariqah] spread across Indonesia and India.